billion users. on mark zuckerberg's facebook page, he wrote, helping a billion people connect is amazing, humbling, and by far the thing i'm most proud of. they've also launched their first commercial. let's take a look. >> chairs. chairs are made so people can sit down and take a break. anyone can sit on a chair. if the chair is large enough, they can sit down together. and tell jokes or make up stories or just listen. chairs are for people. and that is why chairs are like facebook. >> the use of a chair, maria. stock up about 0.4%. back to you. >> that is really funny. thank you, seema. watching facebook there trade in active volume. meanwhile, it's the end of an era at the new york stock exchange today. >> one of the most beloved personalities here on the new york stock exchange floor is retiring today. one james mcguire sr. he began his career in 1949. truman was in office. the dow, i looked it up, was at 180 at that time. >> i was 18 years old. >> you were 18 when you started your career on wall street. different times back then. >> no, pretty much the same. >> nothing has changed?